Wrench



' UNITED STATES PATENT OFFICE,

LESLIE P. HIATT, OF PERU, IOWA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 233,507, dated October19, 1880.

Application filed July 20, 1880.

To all whom it may concern Be it known that I, LEsLIE P. HIAT'I, ofPeru, in the county of Madison and State of Iowa, have invented a newand Improved Wrench, of which the following is a specification.

The object of this invention is to provide a wrench especially adaptedto the unscrewing of bolts and nuts wherebnt little room is given forthe movement of the Wrench-handle.

Figure 1 is a plan of the wrench. Fig. 2 is a side elevation of thesame, showing a portion in section on line a: m, Fig. 1. Fig. 3 is aperspective detail view of the socket-plate.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the lever of the wrench, in whose enlargedcircular end a is a vertical opening, I), in which the socketplate Brevolves. Said plate B is provided with notches in the periphery of itscentral portion, a socket, B, and top and bottom annular flanges, c 01,respectively, by means of which the plate is retained in the opening I),the top flange, 0, being retained in place by pins f, or other suitabledevice, and said top flange, c, is provided with a series of notches,g-in this instance with eight notchesdeeply indented in its edge and atequal distances apart, while the lever A has one deep recess, h, in theside of the opening 1), directly beneath the nose of the pawl 0,corresponding with the notches g of the flange c, and designed toreceive the nose of said pawl U. The pawl O is set centrally along thelever A of the wrench, its depending lug It being entered into a socket,Z, in said lever A, and pivoted therein by the transverse pin m, whilethe uplifted rear end of said pawl O rests on a spiral spring, D, thatprojects upward from the lever A, and thereby the nose n of said pawl Ois held engaged in the recess h of the lever A and in a correspondingnotch, g, of the socket- (ModeL) plate flange 0, while said nose a isdisengaged at any time by pressure on the rear end ofsaid pawl O.

The plate B being set about a bolt or nut, and the recess h of the leverA being brought in correspondence with a notch, g, of said plate B, thenose at of the pawl G is entered into said recess and notch h 9, therebyconnecting the lever A and plate B, so that they will move together, andwhen the leverA has been moved laterally as far as there is room for itsmovement, the pawl G is disengaged and the lever A swung back as far asmay be, so that its recess It shall come beneath another notch, y, whensaid pawl G is again engaged in both recess and notch h g, and in thismanner the plate B and its inclosed bolt or nut may be turned, thenotches g in said plate B permitting short movements for engaging anddisengaging the lever A.

The socket of the plate 13 may be made smaller to accommodate smallerbolts or nuts by insertin g therein auxiliary rectangular frames orplates, as shown at K.

I do not confine myself to the number of notches 9 herein shown in theplate B, as it is evident they may be more or less in number withoutdeparting from myinvention, and that with a greater number of notchesthe Wrench can be operated in a more restricted space.

1 am aware that it is not broadly new to use a rotary wrench-socket heldin any desired position by a ratchet and pawl; but

What I claim as new is In a socket-wrench, the cud-bent springpawl 0,having the nose n, and the handle having recess h, in combination withthe plate B, having peripheral notches g, as and for the purposespecified.

LESLIE PARMER HIATT.

Witnesses A. W. HIATT, S. N. SAYRE.

